html {
    height: 100%;
    overflow: hidden;
}

body {
    display: flex;
    text-align: center;
    justify-content: center;
    flex-direction: column;
    height: 100%;
}

h1 {
    font-size: 12px;
    padding: 10px 0;
    background-color: gray;
}

h1>a {
    color: white;
}

h1>a:hover {
    -webkit-filter: drop-shadow(0 0 15px #eebf23);
    filter: drop-shadow(0 0 15px #eebf23);
}

#root {
    background-color: gray;
    text-align: center;
    width: 100%;
    min-width: 320px;
    height: 100%;
    overflow: auto;
}